Dr. Gregory Scott Johnston, MD
- Part D claims, 2016
- 13
- Hospital affiliations
- 1
- State license
- 1
- Year NPI issued
- 2007
- Practice address
- 37000 North Gantzel Road, Queen Creek, AZ 85140
- Practice phone
- Call (480) 394-4000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Johnston's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Gregory Scott Johnston is a general practice physician in San Tan Valley, Arizona
Dr. Johnston practices at Banner Ironwood Medical Center in Queen Creek, Arizona, part of Banner Health.
Dr. Johnston's NPI, 1447371497, was assigned on April 3, 2007. Dr. Johnston holds Arizona license 18453.
- NPI
- 1447371497NPI Registry (opens in a new tab)
- NPI enumeration date
- April 3, 2007
- NPI status
- Active
- Practice phone
- (480) 394-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Gregory Scott Johnston practices at Banner Ironwood Medical Center in Queen Creek, Arizona
Dr. Johnston's primary practice is Banner Ironwood Medical Center, at 37000 North Gantzel Road, Queen Creek, AZ 85140 in Pinal County. The practice phone is (480) 394-4000.
- Banner Ironwood Medical Center37000 North Gantzel Road, Queen Creek, AZ 85140 · Pinal CountyPhone(480) 394-4000
Source: Dmand AI Affiliation Data
Dr. Gregory Scott Johnston is affiliated with 1 site of care
Dr. Johnston's primary practice is Banner Ironwood Medical Center in Queen Creek, Arizona, part of Banner Health.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Gregory Scott Johnston's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Johnston practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Banner Ironwood Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Gregory Scott Johnston is one of 120 general practice physicians in Arizona
General practice is Dr. Johnston's primary specialty in the NPI Registry, under taxonomy code 208D00000X. Dr. Johnston is licensed in Arizona.
Specialties and state licenses
- General practice, ArizonaPrimary
General practice physicians near Dr. Johnston
Counts of general practice physicians with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Gregory Scott Johnston's patients have a median age of 41
Across all payers, Dmand AI patient panel data puts Dr. Johnston's median patient age at 41, with 47% women.
Dr. Johnston's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 41
Patient panel by sex, all payers
- Women47%
- Men50%
Source: Dmand AI Patient Panel Data
Dr. Gregory Scott Johnston wrote 13 Medicare Part D claims in 2016
In 2016, Dr. Johnston wrote 13 Medicare Part D claims. Every claim was for a generic drug. They cover 1 drug, with $43 in total drug cost.
Dr. Johnston's most prescribed drugs by claims, 2016
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Sources for Dr. Gregory Scott Johnston's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Gregory Scott Johnston
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Gregory Scott Johnston's NPI number?
Dr. Gregory Scott Johnston's NPI number is 1447371497. It was assigned on April 3, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Gregory Scott Johnston?
Dr. Gregory Scott Johnston is a general practice physician in San Tan Valley, Arizona. The primary specialty in the NPI Registry is General Practice Physician (taxonomy code 208D00000X).
Where does Dr. Gregory Scott Johnston practice?
Dr. Johnston practices at 37000 North Gantzel Road, Queen Creek, AZ 85140. Dr. Johnston's primary practice is Banner Ironwood Medical Center in Queen Creek, Arizona, part of Banner Health.
What is Dr. Gregory Scott Johnston's office phone number?
The practice phone on file for Dr. Johnston is (480) 394-4000.
What is Dr. Gregory Scott Johnston's medical license number?
Dr. Johnston holds Arizona license 18453.
Which hospitals is Dr. Gregory Scott Johnston affiliated with?
Dr. Johnston practices at Banner Ironwood Medical Center in Queen Creek, Arizona.
What drugs does Dr. Gregory Scott Johnston prescribe most?
In 2016 Medicare Part D data, Dr. Johnston's most prescribed drugs by claims were Alprazolam.
How long has Dr. Gregory Scott Johnston been practicing?
Dr. Johnston's NPI was assigned in 2007.
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